Key hash for Android-Facebook app

Question

I\'m working on an Android app, in which I want to integrate a Facebook posting feature. I downloaded the Facebook-Android SDK, and I got the readme.md (text file) in there,

Answer 1

try this :

• two way to get Hash Key Value

1) get hash key from using command line (Official Doc : https://developers.facebook.com/docs/android/getting-started)

keytool -exportcert -alias androiddebugkey -keystore %HOMEPATH%\.android\debug.keystore | openssl sha1 -binary | openssl
base64

OR

2) get hash key using code

  @Override
   protected void onCreate(Bundle savedInstanceState) {
           super.onCreate(savedInstanceState);
           setContentView(R.layout.activity_main);

            //Hask Kay generation 
             GetKeyHase();
    }

    private void GetKeyHase() {
            try {
                PackageInfo info = getPackageManager().getPackageInfo("ADD YOUR PACKAGE NAME", PackageManager.GET_SIGNATURES);
                for (Signature signature : info.signatures) {
                    MessageDigest md = (MessageDigest.getInstance("SHA"));
                    md.update(signature.toByteArray());
                    String hashkey_value = new String(Base64.encode(md.digest(), 0));
                    Log.e("hash key", hashkey_value);
                    //check you logcat hash key value
                }
            }catch (Exception e) {
                Log.e("exception", e.toString());
            }
        }